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v3.22.1

RELATED PARTY TRANSACTIONS (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
ZNTB [Member] |  |  |
Office rental paid on behalf of the Group | $ 0 | $ 189,235 | $ 0
BXDT [Member] |  |  |
System Service Fees | 618,119 | 485,190 | 0
Changtongfu [Member] |  |  |
YCloud service revenue | 158,518 | 4,646,329 | 0
HZTC [Member] |  |  |
System Service Fees | $ 0 | $ 739,016 | $ 0

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